Tire Size 325/65r18 vs 35×12.50r18
While both tire sizes are similar, there are some differences to keep in mind. We’ll explore the impact of this tire size change on your vehicle’s performance, both on and off the road.
- Slightly taller tire size provides a 0.39-inch increase in ground clearance
- Minor speedometer deviation of 1.1% at 20 mph, with actual speed being 20.23 mph
- Potential for improved ride comfort due to taller sidewall height
- Negligible impact on fuel efficiency with proper tire maintenance
- Slightly wider tread may offer better traction on loose off-road surfaces
325/65r18 vs 35×12.50r18 Table
The main difference between 325/65R18 and 35×12.50R18 tires is the overall diameter. The 35×12.50R18 tires are 0.39 inches (9.98 mm) taller than the 325/65R18 tires, which translates to a 1.1% difference in diameter.
Fitment Guide
In this case, the diameter difference between 325/65R18 and 35×12.50R18 tires is 1.1%, which falls within the acceptable range of 3%. This means that switching to 35×12.50R18 tires should not require any significant adaptations to your vehicle.
On-Road Impact
Switching to a slightly larger tire size can have various effects on your vehicle’s on-road performance. Let’s explore some key aspects:
- Speedometer Accuracy: With the 35×12.50R18 tires, your speedometer may read slightly slower than your actual speed. At a speedo reading of 20 mph (32.19 km/h), your actual speed will be 20.23 mph (32.55 km/h). This difference is minimal and unlikely to cause any significant issues.
- Ride Comfort: The taller sidewall of the 35×12.50R18 tires may provide a slightly smoother ride, as the increased tire volume can better absorb road imperfections. However, the difference in sidewall height is only 0.2 inches (4.99 mm), so the improvement in ride comfort may be subtle.
- Fuel Efficiency: The larger 35×12.50R18 tires will have a slightly higher rolling resistance, which may result in a minor decrease in fuel efficiency. However, with proper tire inflation and maintenance, this difference should be negligible for most drivers.
Off-Road Impact
If you frequently take your vehicle off-road, the switch to 35×12.50R18 tires can offer some benefits:
- Ground Clearance: The taller 35×12.50R18 tires will provide a small increase in ground clearance, which can be beneficial when navigating rough terrain. The 0.39-inch (9.98 mm) increase in tire diameter may help you clear obstacles more easily.
- Traction: The slightly wider tread of the 35×12.50R18 tires can provide better traction on loose surfaces like sand, gravel, or mud. However, the width difference is only 0.28 inches (7 mm), so the improvement in traction may be minimal.
What is the Difference Between 325/65R18 and 35×12.50R18?
The main difference between 325/65R18 and 35×12.50R18 tires is the overall diameter. The 35×12.50R18 tire is 0.39 inches (9.98 mm) taller than the 325/65R18 tire, which equates to a 1.1% difference in diameter.
This difference in size can slightly affect various aspects of vehicle performance, such as speedometer accuracy, ground clearance, and ride comfort.
Can I Use 35×12.50R18 Instead of 325/65R18?
Yes, you can use 35×12.50R18 tires instead of 325/65R18 tires. The diameter difference between these two tire sizes is approximately 1.1%, which falls within the generally accepted range of 3%.
This means that switching to 35×12.50R18 tires should not cause any significant issues with vehicle handling, safety, or performance.
How Much Taller Is a 35×12.50R18 Tire Than a 325/65R18?
A 35×12.50R18 tire is 0.39 inches (9.98 mm) taller than a 325/65R18 tire. The overall diameter of the 35×12.50R18 tire is 35.03 inches (889.68 mm), while the 325/65R18 tire has a diameter of 34.63 inches (879.7 mm).
How Much Wider is a 325/65R18 Tire Than a 35×12.50R18?
A 325/65R18 tire is 0.28 inches (7 mm) wider than a 35×12.50R18 tire. The 325/65R18 tire has a width of 12.8 inches (325 mm), whereas the 35×12.50R18 tire has a width of 12.52 inches (318 mm).
Our Observations
After analyzing the differences between 325/65R18 and 35×12.50R18 tires, we believe that switching to the larger tire size can offer some minor benefits without requiring significant modifications to your vehicle.
The 1.1% difference in tire diameter is within the acceptable range and should not cause any fitment issues. On the road, the switch to 35×12.50R18 tires may result in a slightly smoother ride and a minor decrease in fuel efficiency.
Off-road, the taller tire size can provide a small increase in ground clearance and potentially better traction on loose surfaces. However, these differences are relatively small and may not be noticeable to all drivers.
Ultimately, the decision to switch from 325/65R18 to 35×12.50R18 tires depends on your specific needs and preferences. If you’re looking for a slight improvement in off-road capabilities and don’t mind a minor speedometer deviation, then making the switch could be a good choice for you.
Meet Caitlin McCormack, a Tire Size Expert and Blogger Passionate About Everything Related to Tires. With Years of Experience in the Tire Industry, Caitlin Has Become an Expert in Tire Sizes and Their Impact on Vehicle Performance.